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// Copyright (c) 2014-2016 Khronos Group. This work is licensed under a
// Creative Commons Attribution 4.0 International License; see
// http://creativecommons.org/licenses/by/4.0/
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vkGetPhysicalDeviceSparseImageFormatProperties(3)
=================================================
Name
----
vkGetPhysicalDeviceSparseImageFormatProperties - Retrieve properties of an image format applied to sparse images.
C Specification
---------------
// refBegin vkGetPhysicalDeviceSparseImageFormatProperties Retrieve properties of an image format applied to sparse images.
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fname:vkGetPhysicalDeviceSparseImageFormatProperties returns an
array of slink:VkSparseImageFormatProperties. Each element will describe
properties for one set of image aspects that are bound simultaneously in the
image. This is usually one element for each aspect in the image, but for
interleaved depth/stencil images there is only one element describing the
combined aspects.
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Change log for July 22, 2016 Vulkan 1.0.22 spec update: * Bump API patch number and header version number to 22 for this update. Github Issues: * Translate the subpass self-dependency language into concrete validity statements, and added a validity statement about the restrictions on layout parameters (public issue 267). * Add validity requirement that slink:VkAttachmentDescription::pname:finalLayout and slink:VkAttachmentReference::pname:layout must not be ename:VK_IMAGE_LAYOUT_UNDEFINED or ename:VK_IMAGE_LAYOUT_PREINITIALIZED (public issue 268). * Clarify that slink:VkSubpassDescription::pname:pResolveAttachments layouts are used. Make language consistent with other attachment arrays (public issue 270). * Changed 64-bit definition for dname:VK_DEFINE_NON_DISPATCHABLE_HANDLE to work for x32 platform in +vk.xml+ and the resulting +vulkan.h+ (public issue 282). * Add missing error return code for flink:vkEnumerateInstanceExtensionProperties and flink:vkEnumerateDeviceExtensionProperties (public issue 285) * Fix several cases of stext::VkStructName.memberName markup to stext::VkStructName::pname:memberName, to match other usage in the spec, and describe this markup in the style guide (public issue 286). * Modified validity language generation script to avoid redundant common ancestor language if covered by generic parent language, and used `Both' instead of `Each' when appropriate (public issue 288). Internal Issues: * Add language about behavior of flink:vkAllocateDescriptorSets when allocation fails due to fragmentation, a new error ename:VK_ERROR_FRAGMENTED_POOL, and a Note explaining the situation (internal issue 309). * For the features of code:PointSize, code:ClipDistance, and code:CullDistance, the SPIR-V capability is required to be declared on use (read or write) rather than on decoration (internal issue 359). * Have desktop versions of GLSL respect precision qualification (code:mediump and code:lowp) when compiling for Vulkan. These will get translated to SPIR-V's code:RelaxedPrecision decoration as they do with OpenGL ES versions of GLSL (ESSL). The default precision of all types is code:highp when using a desktop version (internal issue 360). * Add validity statement for slink:VkImageCreateInfo specifying that multisampled images must be two-dimensional, optimally tiled, and with a single mipmap level (internal issue 369). * Add validity statements to slink:VkImageViewCreateInfo disallowing creation of images or image views with no supported features. Made some slink:VkImageViewCreateInfo validity statements more precise and consistent. Added a Note to the <<features,features>> chapter about formats with no features (internal issue 371). * Remove +manpages+ from default build targets. Nroff outputs containing imbedded latexmath will not render properly. Fixing this is a lot of work for limited use cases (internal issue 401). Other Commits: * Fix flink:vkRenderPassBeginInfo::pname:clearValueCount validity statement to be based on attachment indices rather than the number of cleared attachments (Vulkan-LoaderAndValidationLayers/issues/601). * Convert registry documentation from LaTeX to asciidoc source and rename from +src/spec/readme.tex+ to +src/spec/registry.txt+. * Fix lack of Oxford commas in validity language. * Lots of cleanup of generator scripts and Makefiles to move extension list for generator into the script arguments instead of the body of genvk.py, and express better dependencies between XML, scripts, and generated files.
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include::../api/protos/vkGetPhysicalDeviceSparseImageFormatProperties.txt[]
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Parameters
----------
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* pname:physicalDevice is the physical device from which to query the
sparse image capabilities.
* pname:format is the image format.
* pname:type is the dimensionality of image.
* pname:samples is the number of samples per pixel as defined in
elink:VkSampleCountFlagBits.
* pname:usage is a bitmask describing the intended usage of the image.
* pname:tiling is the tiling arrangement of the data elements in memory.
* pname:pPropertyCount is a pointer to an integer related to the number of
sparse format properties available or queried, as described below.
* pname:pProperties is either `NULL` or a pointer to an array of
slink:VkSparseImageFormatProperties structures.
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Description
-----------
If pname:pProperties is `NULL`, then the number of sparse format properties
available is returned in pname:pPropertyCount. Otherwise,
pname:pPropertyCount must: point to a variable set by the user to the number
of elements in the pname:pProperties array, and on return the variable is
overwritten with the number of structures actually written to
pname:pProperties. If pname:pPropertyCount is less than the
number of sparse format properties available, at most pname:pPropertyCount
structures will be written.
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If ename:VK_IMAGE_CREATE_SPARSE_RESIDENCY_BIT is not supported for the given
arguments, pname:pPropertyCount will be set to zero upon return, and no data
will be written to pname:pProperties.
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Multiple aspects are returned for depth/stencil images that are implemented
as separate planes by the implementation. The depth and stencil data planes
each have unique sname:VkSparseImageFormatProperties data.
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Depth/stencil images with depth and stencil data interleaved into a single
plane will return a single sname:VkSparseImageFormatProperties structure
with the pname:aspectMask set to ename:VK_IMAGE_ASPECT_DEPTH_BIT |
ename:VK_IMAGE_ASPECT_STENCIL_BIT.
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include::../validity/protos/vkGetPhysicalDeviceSparseImageFormatProperties.txt[]
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See Also
--------
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elink:VkFormat, elink:VkImageTiling, elink:VkImageType, elink:VkImageUsageFlags, slink:VkPhysicalDevice, elink:VkSampleCountFlagBits, slink:VkSparseImageFormatProperties
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Document Notes
--------------
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For more information, see the Vulkan Specification at URL
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https://www.khronos.org/registry/vulkan/specs/1.0/xhtml/vkspec.html#vkGetPhysicalDeviceSparseImageFormatProperties
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This page is extracted from the Vulkan Specification.
Fixes and changes should be made to the Specification,not directly.
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include::footer.txt[]